Home / 15,319.83-21,149.78-9,271.20

Finding the Fourth Proportional to 15,319.83, 21,149.78 and 9,271.20

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Solution

The fourth proportional to 15,319.83, 21,149.78 and 9,271.20 is: 12,799.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.83 : 21,149.78 = 9,271.20 : x
  2. Step 2: Convert to fraction form
    15,319.83/21,149.78 = 9,271.20/x
  3. Step 3: Cross multiply
    15,319.83x = 21,149.78 × 9,271.20
  4. Step 4: Simplify right side
    15,319.83x = 196,083,840.34
  5. Step 5: Solve for x
    x = 196,083,840.34/15,319.83
  6. Step 6: Final answer
    x = 12,799.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.